Nuclear Wallet Cards — Z=90


Isotope [1]
Jπ[2]


Δ
(MeV)[3]


T½, Γ, or
Abundance[4]


Decay Mode[5]

Z


El


A


90 Th 209  (5/2-) 3.8 ms +69-15 α
210  0+ 14.0s 9 ms +17-4 α
211  13.8s 37 ms +28-11 ε, α
212  0+ 12.0s 30 ms +20-10 α, ε ≈0.3%
213  12.1s 140 ms 25 α
214  0+ 10.67s 100 ms 25 α
215  (1/2-) 10.92 1.2 s 2 α
216  0+ 10.29 0.028 s 2 α, ε ≈0.01%
216m (8+) 12.32 180 µs 40 IT ≈97%, α ≈3%
217  (9/2+) 12.17 0.252 ms 7 α
218  0+ 12.36 109 ns 13 α
219  14.46 1.05 µs 3 α
220  0+ 14.66 9.7 µs 6 α, ε 2.0×10-7%
221  (7/2+) 16.93 1.68 ms 6 α
222  0+ 17.19 2.8 ms 3 α
223  (5/2)+ 19.371 0.60 s 2 α
224  0+ 19.99 1.05 s 2 α
225  (3/2)+ 22.301 8.72 m 4 α ≈90%, ε ≈10%
226  0+ 23.186 30.57 m 10 α
227  (1/2+) 25.801 18.72 d 2 α
228  0+ 26.763 1.9116 y 16 α, 20O 1×10-11%
229  5/2+ 29.580 7340 y 160 α
230  0+ 30.857 7.538×10+4 y 30 α, SF <4.×10-11%
231  5/2+ 33.811 25.52 h 1 β-, α ≈1.0×10-8%
232  0+ 35.444 1.405×10+10 y 6 α, SF 1.2×10-8%, Ne
  100%
233  1/2+ 38.729 22.3 m 1 β-
234  0+ 40.609 24.10 d 3 β-
235  (1/2+) 44.25 7.1 m 2 β-
236  0+ 46.3s 37.5 m 2 β-
237  (5/2+) 50.2s 5.0 m 9 β-
238  0+ 52.4s ≈20 m β-?

To Z=89 Z=89 To Wallet Cards Wallet Cards Z=91 To Z=91